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Re: checking for file existence when I don't know the exact name
- X-seq: zsh-users 16541
- From: Jérémie Roquet <arkanosis@xxxxxxxxx>
- To: Zsh Users <zsh-users@xxxxxxx>
- Subject: Re: checking for file existence when I don't know the exact name
- Date: Mon, 24 Oct 2011 16:59:43 +0200
- Cc: TJ Luoma <luomat@xxxxxxxxx>
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2011/10/24 TJ Luoma <luomat@xxxxxxxxx>:
> 2011/10/24 Jérémie Roquet <arkanosis@xxxxxxxxx>
>> From the man, section “conditional expressions” :
>> “File generation is not performed on any form of argument to
> This isn't file _generation_, is it? Or am I not understanding zsh's terms?
Err, it's file*name* generation, actually. In zsh's terms, filename
generation refers to globbing.
Peter, maybe we should fix the doc there?
> I still don't fully understand why / when to use [[ ]] instead of [ ]
Most of the time, I guess. [[ ]] is part of the syntax and has a
number of advanced features while [ is just a command very similar to
“test” and ] an argument to this command.
Unless you want to keep your scripts portable accross different
shells, of course.
diff --git a/Doc/Zsh/cond.yo b/Doc/Zsh/cond.yo
index 489ee35..71971b4 100644
@@ -184,7 +184,7 @@ enditem()
Normal shell expansion is performed on the var(file), var(string) and
var(pattern) arguments, but the result of each expansion is constrained to
be a single word, similar to the effect of double quotes.
-File generation is not performed on any form of argument to conditions.
+Filename generation is not performed on any form of argument to conditions.
However, pattern metacharacters are active for the var(pattern) arguments;
the patterns are the same as those used for filename generation, see
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